title: 2-Chloro-3-[(2-oxo-2H-chromen-6-yl)amino]-naphthalene-1,4-dione.
abstract: In the title compound, C19H10ClNO4, the dihedral angle between the naphtho-quinone and coumarin rings is 48.99 (6)°. In the crystal, mol-ecules are linked by strong N-H⋯O hydrogen bonds into chains with graph-set motif C(6) along [101]. The packing also features π-π stacking inter-actions between naphtho-quinone and coumarin rings [centroid-to-centroid distances = 3.7679 (12) and 3.6180 (13) Å].
authors.affiliation: Departamento de Química Inorgânica, Universidade Federal Fluminense, Niterói, CEP 24-020-140, Rio de Janeiro, Brazil.
authors.forename: Mikaelly O B
authors.initials: MO
authors.lastname: Sousa
authors.forename: Gleiciani Q
authors.initials: GQ
authors.lastname: Silveira
authors.forename: Javier A G
authors.initials: JA
authors.lastname: Gomez